diff --git a/app/models/issue.rb b/app/models/issue.rb
index e0f4a385e..4f160755f 100644
--- a/app/models/issue.rb
+++ b/app/models/issue.rb
@@ -94,7 +94,7 @@ class Issue < ApplicationRecord
   has_many :attach_pull_requests, through: :pull_attached_issues, source: :pull_request
   # PM 关联工作项目
   has_many :pm_links, as: :linkable, dependent: :destroy
-  has_many :be_pm_links,as: :be_linkable, dependent: :destroy
+
   belongs_to :changer, class_name: 'User', foreign_key: :changer_id, optional: true
 
   scope :issue_includes, ->{includes(:user)}
@@ -106,8 +106,13 @@ class Issue < ApplicationRecord
   scope :opened, ->{where.not(status_id: 5)}
   after_create :incre_project_common, :incre_user_statistic, :incre_platform_statistic
   before_save :check_pm_and_update_due_date
+
   after_save :incre_or_decre_closed_issues_count, :change_versions_count, :send_update_message_to_notice_system, :associate_attachment_container, :generate_uuid
-  after_destroy :update_closed_issues_count_in_project!, :decre_project_common, :decre_user_statistic, :decre_platform_statistic
+  after_destroy :update_closed_issues_count_in_project!, :decre_project_common, :decre_user_statistic, :decre_platform_statistic, :destroy_be_pm_links
+
+  def destroy_be_pm_links
+    PmLink.where(be_linkable_type:"Issue",be_linkable_id:self.id).map(&:destroy)
+  end
 
   def check_pm_and_update_due_date
     if pm_project_id.present? && pm_issue_type.present? && status_id_changed?
diff --git a/app/models/pm_link.rb b/app/models/pm_link.rb
index 0e7d56b59..91962bf7b 100644
--- a/app/models/pm_link.rb
+++ b/app/models/pm_link.rb
@@ -18,9 +18,8 @@
 
 class PmLink < ApplicationRecord
   belongs_to :linkable, polymorphic: true
-  belongs_to :be_linkable, polymorphic: true
 
-  # def be_linkable
-  #   be_linkable_type.constantize.find be_linkable_id
-  # end
+  def be_linkable
+    be_linkable_type.constantize.find be_linkable_id
+  end
 end